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Sahay Sir > Question Answers > Cengage JEE Mains Physics by B.M Sharma > Chapter 30 - Nuclear Physics > Activity of radioactive element decreased to one third of original activity A0 in a period of 9 years. After further lapse of 9 years, its activity will be

Activity of radioactive element decreased to one third of original activity A0 in a period of 9 years. After further lapse of 9 years, its activity will be

Activity of radioactive element decreased to one third of original activity A0 in a period of 9 years. After further lapse of 9 years its activity will be